18 June 2018 : Clinical Research
Relationship Between Preoperative Low-Density Lipoprotein Cholesterol and Periprocedural Myocardial Injury in Patients Following Elective Percutaneous Coronary Intervention in Southern ChinaZhixiong Zhong12BCDEFG, Jing Liu23BCDEF, Qifeng Zhang2BC, Wei Zhong2BC, Bin Li2BC, Cunren Li2BC, Zhidong Liu4BC, Min Yang2BC, Pingsen Zhao23ABCDEFG*
Med Sci Monit 2018; 24: CLR4154-4161
BACKGROUND: Periprocedural myocardial injury (PMI) is known to be a predictor of postprocedural cardiovascular morbidity and mortality following a percutaneous coronary intervention (PCI). However, the correlation between low-density lipoprotein cholesterol and periprocedural myocardial injury in patients following elective PCI in southern China remains unclear. Therefore, we aimed to investigate the association of preoperative low-density lipoprotein cholesterol (LDL-C) levels with PMI in patients following elective PCI.
MATERIAL AND METHODS: This study included 1942 consecutive patients who received elective PCI. Cardiac troponin I (cTnI) was used to assess perioperative myocardial injury. The peak cTnI was measured within 24 h after PCI, and the correlation between the cTnI value and the preoperative LDL level was studied.
RESULTS: The data suggest that the PCI patients with preprocedural LDL-C <100 mg/dl were strongly and independently correlated with less risk of PMI. Univariate logistic regression indicated that patients with preprocedural LDL-C of 70~99 mg/dl were correlated with lower risk of postprocedural cTnI elevation above 3×ULN (odds ratio [OR]: 0.762; 95% [CI]: 0.603–0.965; P<0.024) up to 20×ULN (OR: 0.730; 95% CI: 0.576–0.924; P<0.000) compared to those with preprocedural LDL-C ≥100 mg/dl. Moreover, patients with preprocedural LDL-C of <70 mg/dl were more strongly correlated with lower risk of postprocedural cTnI elevation above 3×ULN (OR: 0.641; 95% CI: 0.436–0.936; P<0.021) up to 20×ULN (OR: 0.476; 95% CI: 0.316–0.717; P<0.000).
CONCLUSIONS: Our study demonstrated that PCI patients with lower preprocedural LDL-C were correlated with a lower risk of PMI in southern China.
Keywords: Cholesterol, LDL, percutaneous coronary intervention, troponin I
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